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📝 How it works:
Calculate circumference for circle (U=2πr), rectangle (U=2(a+b)), square, triangle with formulas.
Fill in the fields below and click "Calculate".
Calculate circumference for circle (U=2πr), rectangle (U=2(a+b)), square, triangle with formulas.
Fill in the fields below and click "Calculate".
Perimeter Calculator - Free Online Tool
Calculate perimeter of rectangles, circles, triangles and polygons Our calculator provides fast, accurate, and free calculations for your needs.
How to Use Perimeter Calculator
Simply enter your values and get instant results. No registration required, works on all devices.
Key Features
- Accurate Results: Mathematically precise calculations
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Why Use Our Perimeter Calculator?
Trusted by thousands of users daily. Fast, reliable, and always available. Perfect for professional and personal use.
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